Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1998-12-11
2000-05-16
Bettendorf, Justin P.
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
333177, H01P 120
Patent
active
060642858
ABSTRACT:
A filter described which includes helical resonator elements constructed using printed circuit board (PCB) materials and fabrication techniques. A helical resonator element is formed from conductive traces on either side of a double sided PCB substrate with interconnection of the traces using plated through holes to form a three dimensional serpentine or helical conductor path. Multiple resonator elements are RF coupled using ferromagnetic coupling elements. The shape and number of the coupling elements may be selected to control RF coupling between resonator elements and the tuning of the filter.
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Harron Gerald D.
Kumar Surinder G.
Bettendorf Justin P.
Leier Terry
Wavecom Electronics Inc
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